Concrete pile.



0. HFF & C. F. HAGLIN.

(No Muvdei.)

(APP

CONCRETE PILE.

lcation filed Apr. 13, 1900.).

Mmm.

m: mums Frans co, Pwomumo wAsMmnmN. me.

Patentd July 24,

2 Sheets-Sheet No. 654,397. Patentedfluly 24, |900. O. HOFF & C. F. HAGLIN.

CONCRETE PILE.

(Application filed. Apr. 13, 1900.) (No Model.) 2 sheets-sheet 2.

Llllll DI vented certain new and useful Improvements UNITE STATES PATENT @Fria OLAF Horn AND CHARLES r. I-IAeLIN, or MINNEAPOLIS, MINNESOTA.

CONCRETE PILE.

SPECIFICATION forming part of Letters Patent No. 654,397, datedJuly 24, 1900.

Application nea April is, 1900.

To @ZZ whom it mayeoncerm Be it known that we, VOLAF HOFF and CHARLES F. HAGLIN, citizens of the United States, residing atMinneapolis, in the county of Hennepin and State of Minnesota, have inin Concrete Piles; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

Our invention relates ltothe improvement ot concrete piles and columns wherein metal bars, rods, and other braces are embedded to give increased strength thereto.

This invention has for its especial object to improve the construction of concretepiles, whereby they are given increased strength and are more easily driven or sunken. u

To the vabove ends the invention consists of the novel devices and combinations of de vices hereinafter described, and defined in the claims.

As a salient feature of this invention a metal core is passed longitudinally through the pile or column and a plurality of binding-braces, either in the form of straps or rods, are radiated from the said core and embedded within Vthe concrete body oi' the pile or column.

As another feature of this invention the pile is provided with one or more hollow metal cores or tubes embedded Atherein and extended longitudinally therethrough and adapted to serve to transmit water to the lower end of the pile to effect the sinking of the pile on the jet principle. Where a central core is used leading to the point of the pile, this core is advisably made hollow for the purpose just indicated, so that the said pipe in this case is made to serve the double function of a core to which the bindingbrackets are applied and as awater-conducting tube.

This invention also contemplates the improvement of so-called sheet-piles, such as used in the construction of cofter-dams and elsewhere, and in such construction the embedded tubes or cores are as an additional feature of novelty provided with branches which open to that edge of the sheet-pile which abuts against and frictionally engages l Fig. 3.

Serial No. 12,706. (No model.)

lthe lastdriven pile, thus servingto supply water between the `rubbing surfaces of the piles, the water thus delivered serving to wash out the sand and to act as a lubricant to make the sinking' or driving of the piles easier. The inventionin several forms is illustrated in accompanying drawings,wherein like characters indicate like parts throughout the several views.

Figure l is a vertical section takenentrally through a cylindrical pile constructed in accordance with our invention. Fig. 2 is a horizontal section on the line m2 rc2 of Fig. 1. Fig. 3 is a view corresponding to Fig. 1, but illustrating a slightly-modified construction. Fig. 4L is a section on the line mi 004 of Fig. 5 is a view corresponding to Fig. l, but illustrating a modified construction especially adapted for very large piles. Fig. 6 is a horizontal sectionon the line 006 m6 of Fig. 5. Fig. 7 is a horizontal section through a square pile. Fig. 8 shows an adjacent pair ot sheet-piles in vertical section, some parts being broken away; and Fig. 9 is a horizontal section on the line :r9 x9 of Fig. 8.

In the construction `illustrated in Figs.. l to 7, inclusive, the character ct indicates the concrete body of the pile and the character h indicates a pipe or hollow coreu which is embedded within the cementbody a and extends longitudinally and centrally therethrough.

The radially-projecting binding-braces are preferably constructed as shown, being in pairs formed by V-shaped bars c, preferably hooked at their outer ends o' and bent to embrace the pipe or core h for about a semicircumference. The arms of the brackets o are positioned spirally one above the other to evenly distribute their binding or tying properties throughout the body of the pile. In the construction illustrated in Figs. l to 6, inclusive, the piles being round in cross-section the brackets c for a given pile may be of the same length except at the tapered ends of the pile, where they are shorter. The piles shown in Fig. 7 being square in cross-section,

IOO

certain of the said brackets o are longer than others, as clearly indicated and for an Obvi ous reason. l Y

In the construction illustrated in Figs. 5-

. together they will be caused to aline.

and 6 a plurality of supplemental cores or jetting-pipes f are extended longitudinally through the pile near its outer surface, and in this construction the hooked outer ends c of the brackets c are hooked over the said rods f. Alsolinks f, having hooked ends, tie the-adjacent rodsf together' at various points longitudinally of the pile.

In the pile shown in Fig. 7 cores preferably in the form of pipes f2 pass longitudinally through the pile near its corners, and lin-ks` f3, having hooked ends, are extended from one to the other of the said corner pipes or cores f2.

In the constructions illustrated in Figs. l and 5 the lower ends of the piles are brought to quite sharp points, the said points of the pile being formed by conical shoes g, through the apexes of which the cores or pipes b open. Each shoe g is secured to the lower ends of a plurality of anchor bars or rods g', that follow the outline of the tapered lower end of the pile and are bentinward at g2 to form hooked .ends that are embedded within the cement body of the pile. As illustrated in Fig. 5, the so-called auxiliary cores or jetting-tubes f open through the conical sides of the lwer end of the pile to deliver th'e water at various points 'around the pile.

' In the construction illustrated in Fig. 3the lower end of the pile is quite blunt, being in the form of a truncated cone, and the lower end of the pile being somewhat strengthened by a pair of yoke-like straps g3, the upper ends g4 of which are embedded within the concrete body of the pile. Also in this construction the tubular core b is provided near its lower end with a plurality, preferably four, of branch tubes b', that open through the sides of the truncated conical end of the pile.

Where a quantity of water is distributed over the entire lower end of the pile, as shown in Fig. 3, a very blunt or even square-cut pile without an end cap or plate may be driven where the ground is not too hard.

Y The character 7c indicates the heavy flat body of the sheet-pile, (shown in Figs. 8 and 9,) and in this construction two cores are pref-l erably run longitudinally through each pile, the core m being preferably of tubular form plugged at its lower end and the other core m' being also a tube or pipe open at its lower end to adapt it for use as a jetting-tube. The lower beveled end of the pile is faced by a metallic strap n, the ends of which are turned upward and inward and embedded in the concrete body 7o. In this construction the binding-brackets c are applied to the cores m and m' and embedded within the concrete body 7e, the same as in the construction above described. One edge of the pile is formed convex, as at 7c', and the other concave, as at k2, so that when the piles are driven closely In the construction shown the convex edge 7a' is proruns from the top or from near the top of the pile downward, but terminates short of the lower end of the pile, approximately as shown in Fig. 8. with several branch pipes m2, that open into the groove 7c3 and serve to supply water thereto for a purpose, as already indicated. After the piles have been driven cement may be forced into the groove 7c3 and between the piles through the pipe m and its branches m2. ....*To force either water or cement through the hollow cores or embedded pipes, it will of course be understood that a hose or suitable delivery device would be applied to the upper ends of the said tubes. We believe it to be broadly new to provide a pile with a longitudinal passage throgh which a jet of water may be delivered to the lower end of the same or, in fact, to any portion of the pile.

What we claim, and desire to secure by Let- 1. A concrete pile or column havingalom gitudinally-extended core and a plurality of radial binding-braces projecting from said core and embedded in the body of the pile, substantially as described.

2. A concrete pile or column havinga lougitudinally-extended core and a plurality of binding brackets or rods radiating from said core in different vertical planes, and em bedded within the body of the pile, substan tially as described.

3. A concrete pile or column having a longitudinally-extended core, and a plurality of" brackets or braces c arranged in different planes and partially encircling the said core with their prongs radiating therefrom, which core and brackets are embedded within said pile, substantially as described.

4. A concrete pile, having a hollow core serving as a jetting-tube, and a plurality of binding brackets or rods radiating from said core and embedded within the body of the pile, substantially as described.

5. A sheet-pile'of concrete, having a longitudinally-extended letting-pipe provided with a plurality of branches opening at one edge thereof, substantially as described.

G. A concrete pile, having a longitudinally- .extended jetting-passage plugged at its lower end and provided with one or more lateral passages opening at the edge or side of the pile and through which water and cement may be injected, substantially as described.

7. A concrete pile, having a primary central core anda plurality of auxiliary cores embedded therein, surrounding said central cores, and radial binding-braces connecting the said primary and auxiliary cores, substantially as described.

8. A concrete pile, having a primary, central core, and a plurality of auxiliary or surrounding cores, radial binding-braces connecting said primary and auxiliary cores, and tie brackets or rods connecting said auxilvided with a longitudinal groove 7c3, which iary cores, substantially as described.

The tubular cores fm are providedters Patent of the United States, is as follows:

IIO

9. A concrete pile having one concave and In testimony whereof We affix oui" signaone convex edge, which edges are engageable tures in presence of two Witnesses,

with the reversely-formed edges of adjacent y OLAF HOFF..

piles for less than a semieire1e,whereby said CHARLES F. HAGLIN. 5 piles are alined and may be separated by Witnesses:

transverse movements, substantially as de- M. M. MCGRORY,

scribed. f l "1?. D. MERCHANT. 

